| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Achillea millefolium | Plant | -- | 155.0 | -1.0 | * |
| Acorus calamus | Plant | -- | -- | * | |
| Alisma plantago-aquatica | Plant | -- | -- | * | |
| Artemisia capillaris | Essential Oil | -- | -- | * | |
| Artemisia dracunculus | Plant | -- | -- | Stitt, Paul. Why George should eat broccoli. | |
| Aspalathus linearis | Leaf Essent. Oil | -- | 700.0 | * | |
| Asparagus officinalis | Shoot | -- | -- | * | |
| Camellia sinensis | Leaf | -- | -- | * | |
| Capsicum annuum | Fruit | -- | -- | * | |
| Carthamus tinctorius | Bud | -- | 0.04 | * | |
| Cinnamomum aromaticum | Plant | -- | -- | * | |
| Cinnamomum verum | Root Bark | -- | -- | * | |
| Cinnamomum verum | Plant | -- | -- | * | |
| Citrus aurantium | Plant | -- | -- | * | |
| Elsholtzia nipponica | Plant | -- | -- | Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp. | |
| Glycyrrhiza glabra | Root | -- | -- | * | |
| Glycyrrhiza glabra | Root Essent. Oil | -- | -- | * | |
| Hamamelis virginiana | Bark | -- | -- | * | |
| Hypericum perforatum | Plant | -- | -- | * | |
| Ligustrum japonicum | Flower Essent. Oil | -- | -- | * |